1/*
 2 *	crc-itu-t.h - CRC ITU-T V.41 routine
 3 *
 4 * Implements the standard CRC ITU-T V.41:
 5 *   Width 16
 6 *   Poly  0x1021 (x^16 + x^12 + x^15 + 1)
 7 *   Init  0
 8 *
 9 * This source code is licensed under the GNU General Public License,
10 * Version 2. See the file COPYING for more details.
11 */
12
13#ifndef CRC_ITU_T_H
14#define CRC_ITU_T_H
15
16#include <linux/types.h>
17
18extern u16 const crc_itu_t_table[256];
19
20extern u16 crc_itu_t(u16 crc, const u8 *buffer, size_t len);
21
22static inline u16 crc_itu_t_byte(u16 crc, const u8 data)
23{
24	return (crc << 8) ^ crc_itu_t_table[((crc >> 8) ^ data) & 0xff];
25}
26
27#endif /* CRC_ITU_T_H */
28

 1/*
 2 *	crc-itu-t.h - CRC ITU-T V.41 routine
 3 *
 4 * Implements the standard CRC ITU-T V.41:
 5 *   Width 16
 6 *   Poly  0x0x1021 (x^16 + x^12 + x^15 + 1)
 7 *   Init  0
 8 *
 9 * This source code is licensed under the GNU General Public License,
10 * Version 2. See the file COPYING for more details.
11 */
12
13#ifndef CRC_ITU_T_H
14#define CRC_ITU_T_H
15
16#include <linux/types.h>
17
18extern u16 const crc_itu_t_table[256];
19
20extern u16 crc_itu_t(u16 crc, const u8 *buffer, size_t len);
21
22static inline u16 crc_itu_t_byte(u16 crc, const u8 data)
23{
24	return (crc << 8) ^ crc_itu_t_table[((crc >> 8) ^ data) & 0xff];
25}
26
27#endif /* CRC_ITU_T_H */
28